How to Find LCM by Listing Multiples
- List the multiples of each number until at least one of the multiples appears on all lists.
- Find the smallest number that is on all of the lists.
- This number is the LCM.
Contents
What is the formula for finding LCM?
Also, check the LCM of two numbers to understand the steps to find the LCM of any two number easily.
Formula of L.C.M.
| Formulas To Calculate LCM | |
|---|---|
| L.C.M formula for any two numbers | L.C.M. = a×bgcd(a,b) |
How do you find common multiples?
We can find the common multiples of two or more numbers by listing the multiples of each number and then finding their common multiples. For example, to find the common multiples of 3 and 4, we list their multiples and then find their common multiples. Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36,
How do you find three common multiples?
To find the common multiples of given numbers, find the LCM of those numbers. The multiples of the LCM will be the common multiples of those numbers. The first three multiples of 24 are 24, 48, and 72. So, the first three common multiples of 6 and 8 are 24, 48, and 72.
What is the lowest common multiple of 6?
Because 60 is the only multiple all three numbers have in common, 60 is the lowest common multiple of the three numbers.
How to find the lowest common multiple
- Multiples of 6 are 6, 12, 18, 24, 30, 36.
- Multiples of 15 are 15, 30, 45, 60.
- Multiples of 20 are 20, 40, 60, 80.
What is the least common multiple of 6 and 8?
24
Answer: LCM of 6 and 8 is 24.
What is the least common multiple of 3 and 4?
12
Answer: LCM of 3 and 4 is 12.
What is the least common multiple of 5 and 15?
15
Answer: LCM of 5 and 15 is 15.
What is the least common multiple of 2 and 8?
8
What is the LCM of 2 and 8? Answer: LCM of 2 and 8 is 8.
What is the least common multiple of 2 and 6?
6
Answer: LCM of 2 and 6 is 6.
What’s the least common multiple of 20 and 15?
60
Answer: LCM of 15 and 20 is 60.
How do you find the least common multiple problem?
How to Find the Least Common Multiple
- Write down the prime decompositions of all the numbers.
- For each prime number you find, underline the most repeated occurrences of each. In other words, compare the decompositions.
- Multiply the underlined numbers to get the LCM.
What is the lowest common multiple of 3 and 7?
21
Answer: LCM of 3 and 7 is 21.
What is the lowest common multiple of 3 and 9?
9
Answer: LCM of 3 and 9 is 9.
What is the least common multiple of 3 and 5?
15
Answer: LCM of 3 and 5 is 15.
What is the least common multiple of 4 and 10?
20
Answer: LCM of 4 and 10 is 20.
What is the least common multiple of 10 and 12?
60
Answer: LCM of 10 and 12 is 60.
What is the least common multiple of 6 and 10?
30
Answer: LCM of 6 and 10 is 30.
What is the least common multiple of 4 and 6?
12
Answer: LCM of 4 and 6 is 12.
What is the least common multiple of 3 and 6?
6
What is the LCM of 3 and 6? Answer: LCM of 3 and 6 is 6.
What is the least common multiple of 6 and 9?
18
The LCM of 6 and 9 is 18. To find the LCM (least common multiple) of 6 and 9, we need to find the multiples of 6 and 9 (multiples of 6 = 6, 12, 18, 24; multiples of 9 = 9, 18, 27, 36) and choose the smallest multiple that is exactly divisible by 6 and 9, i.e., 18.